Steam-boiler.



T. BARRQW. STEAM BOILBR.

APPLICATION FILED NOV. 13, 1905.

Patented Feb.22, 1910.

2 SHEETS-SHEET 1.

T. BARRGW. STEAM BoILBR.

APPLICATION FILED NOV. 13, 1905. 949,953. A Patented Feb. 22, 1910.

2 SHEETS-SHEET 2.

UNTED STATE PATENT FFCE.

THOMAS BARROW, OF DAVENPORT, IOWA.

STEAM-BOILER.

T o all whom it may concern:

Be it known that I, THOMAS BARRow, a citizen of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification.

My invention relates to steam boilers and has for its object to provide a simple, yet eliicient water tube attachment for horizontal boilers and with this object in view, my invention consists of the parts and combination of parts as will be hereinafter more fully pointed out.

In the drawings, Figure 1 isa longitudinal vertical section of a boiler and setting embodying my invention. Fig. 2 is a rear view of the same, parts being broken away. Fig. 3 is a front elevation of the same, parts being broken away. Fig. 4 is a rear elevation of a modified rear header. Fig. 5 is a detail sectional view.

A is a suitable boiler having a suitable setting of brick work B.

2 is a series of tubes arranged side by side under the boiler, said tubes being inclined downward from thev front toward the back of the boiler, the ends of the tubes being expanded into the cast steel header 3 at the front of the boiler and casting 4 at the back of the boiler. The cast steel header 3 is provided with two chambers 5 and 6, the chamber 5 having a series of openings 7 forming hand holes for the tubes while the chamber 6 forms a man hole under the center of the boiler, as shown in Fig. 3. The hand hole and the man hole are each provided with suitable covers, not shown.

The cast steel header 4 supported on the wall 23 is provided with a large chamber 8 having a partition 9 near its o uter wall, the partition and outer wall being provided with hand holes, in line with the tubes 2, as clearly shown in Fig. 1. The chamber S is provided with a blow-out 10, leading into the chamber 11 that has an open rear end, whereby the tubes may be readily cleaned. It will be noted that the handholes of the header 4 open into this chamber 11.

12 are specially shaped iirebrick dropped between the tubes 2, said brick being spaced apart to provide fire passages or flues between the tubes, said passages being indi- Speccation of Letters Patent.

Application led November 13, 1905.

Serial No. 287,128.

cated by the numeral 13, the arrows 14 indieating the draft, which is suflicient to keep the bottom of the boiler heated.

15 is a series of walls built upon the bridge wall 16 to support the tubes 2, the walls 15 being spaced apart to form passages for the gases from the fire.

17 is a series of walls built on top of the tubes 2, there being four shown in the drawing (see Fig. 2) which form passages for the gases which pass between the walls 15 built on the bridge wall 16. The walls 17 serve as a support for the flat tiles 18, which form a covering for the passages between the walls 17. The gases passing through the passages under the tiles 18 and between the walls 15 and 17 heat them to a white heat, thereby forming an excellent smoke consumer, as do also the brick 12, said brick being provided with concave sides to insure a. snug fit between them and the tubes.

As will be seen from the drawing, the tubes 2 are on an angle, thus insuring a very rapid circulation and with the gases passing up and through the passages between the walls 17, the hand-holes in the back header are clear of the fire. The brick sett-ing of the boiler is built to leave chambers 11 and 19 back of the boiler, said chambers being separated by a partition 20, and it is through the chamber 19 that the gases pass to the boiler. The partition 20 protects the chamber 11 into which the hand-holes of the back header 4 open, thus facilitating the cleaning ofthe tubes. The chamber 19 is provided with a cleaning door 21.

22 is a cleaning door leading to the space between the top of the tubes and the boiler.

As will be seen from Fig. 3, the front cast steel header is combined in one casting with the man-hole 6, which is formed in the restricted portion of the casting and, as stated, is separated from the hand-hole space 5 by a partition. The rear header 4 is provided with an upwardly extending pedestal 24 having a concave top 25 upon which the rear end of the boiler rests, as shown in Fig. 2. It will be noted that the tile covering 18 is inclined on an angle just the reverse of the angle inwhich the circulating tubes are set.

In Fig. 4, I have shown a modified construction at rear of boiler wherein one header above the other is connected by means of short tubes 26. The bottom header 27 is Patented Feb. 22, 1910.

provided with openings in its top into which the tubes 26 are expanded, and with openings in its front wall into which the ends of circulating tubes 2 are expanded. 29 is a hand-hole in the rear wall of the header in line with the tubes 2, and 30 is al hand hole in the bottom wall of the header in line with the tubes 26. These hand holes facilitate the expanding of the tubes 26 and 2 in the header. The brick-work is the same as in the other iigures. The bottom header and the hand-holes are free from fire.

Having described my invention, what I claim as new is l. rIhe combination with a boiler, its setting, circulating tubes and hand-holes at the front and rear ends of said tubes, of separated chambers between the rear of the boiler and its setting, one of said chambers being open to the re while the other is closed to the iire, the hand-holes at the rear ends of said tubes opening into the latter chamber.

2. The combination with a boiler and its circulating tubes, of two separated chambers back of the boiler, one of which is open to the fire, while the other is not, and handholes for said tubes located in the chamber closed to the fire.

3. The combination with a boiler, and its circulating tubes, of two separated chambers back of the boiler, one of which is open to the re, while the other is not, hand-holes and a blow-out for said tubes located in the chamber closed to the fire.

4L. In a boiler, a header comprising two separated chambers, one for hand-holes, the other forming a man-hole.

5. In a steam boiler, the combination with circulating tubes, of walls extending upward from said tubes and forming fire passages above said tubes.

6. In a steam boiler, the combination with the circulating tubes, of walls extending upward from said tubes,A and a covering bridging said walls forming re passages above the tubes.

7 In a steam boiler, the combination with the circulating tubes, of walls extending above said tubes, a covering bridging said walls forming tire passages above the tubes and a fire passage above said covering.

8. In a steam boiler, the combination with the circulating tubes, a bridge wall, and a series of walls upon said tire wall spaced apart and forming a support for said tubes, of walls extending upwardly from the said tubes and a cover bridging said walls thus forming tire passages.

9. In a steam boiler, the combination with the circulating tubes, a bridge wall, and a series of walls upon said iire wall, spaced apart and forming a support for said tubes,

of walls extending upwardly from the said tubes, a cover bridging said walls thus forming tire passages, and a fire passage between said cover and the bottom of the boiler.

10. In a steam boiler, the combination with circulating tubes inclined downwardly from the front toward the rear of the boiler, of walls extending upwardly from said tubes at the rear and inclined downwardly from the rear toward the front of the boiler but extending less than half the length of the tubes.

11. In a steam boiler, the combination with circulating tubes set on an angle of walls built upon some of said tubes, the top of said walls being inclined on an angle reverse of the angle of the tubes, a covering bridging said walls tlius forming lire passages between said cover and the boiler.

l2. In a steam boiler, the combination with water circulating tubes and headers for the same, of walls built upon some of the tubes, a covering bridging said walls thus forming re passages and two separated chambers back of the boiler into one of which the said fire passages open, the other chamber being closed to said passages and hand-holes for the circulating tubes opening into the last-nained chamber.

In testimony whereof I aix my signature in presence of two witnesses.

THOMAS BARROIV.

lVitnesses LoUIs BLOCK, KATIE MAHAN. 

